Find this stuff or see if a pest control company/distributor will sell you some.
http://www.domyownpestcontrol.com/ba...art-p-282.html
Bacazap.
Its what what we recommended to PC guys and wildlife control guys use when I ran a distribution center for pest control chemical.
This stuff works and uses a blend of organisms to actually "eat" the decaying or organic matter causing the odor not just cover it up.
Here is a review from the link:
"By Anne on October 7, 2011
Our dog got a mini spray from a skunk that was just outside our door one night, but the smell was still overpowering in the house. I tried your product as a sample from an animal control agent. Boy did that do that trick. It neutralized the odor - and nothing works on a skunk smell! I bought some of this recently but am still learning what else to use it for. A great product!."